SQL not properly ended error

I am in the midst of creating a shopping website. However i'm stuck here. I can view my list of products and click to further go into an update form with previously entered details. But when i click "update", i always get this error below.

Microsoft OLE DB Provider for ODBC Drivers error '80040e14'
[Microsoft][ODBC driver for Oracle][Oracle]ORA-00933: SQL command not properly ended

/manageproducts.asp, line 105

Why do they keep throwing me this error? whats wrong with my sql? I only have these fields in my table.

Create table Products(
product_id INTEGER,
product_name VARCHAR(50),
product_price REAL,
product_description VARCHAR(3000),
product_category VARCHAR(30),
product_subcategory VARCHAR(30),
product_stock INTEGER,
product_image VARCHAR(50),
product_status INTEGER,
PRIMARY KEY (product_id)
);

My code:
<%

' Update Product
IF updateProduct <> "" THEN

sqlString = "UPDATE Products SET " &_
"product_name='" & fixQuotes( productName ) & "'," &_
"product_price=" & productPrice & "," &_
"product_description='" & fixQuotes( productDescription ) & "'," &_
"product_category='" & fixQuotes( productCategory ) & "'," &_
"product_subcategory='" & fixQuotes( productSubcategory ) & "'," &_
"product_stock='" & productStock & "'," &_
"product_image='" & fixQuotes( productImage ) & "'," &_
"product_status=" & productStatus &" WHERE " &_
"product_id=" & productID

Conn.Execute sqlString

%>

Pls help. Thanks!